import java.util.Scanner;

/**
 * @Version v1.0
 * @Description: TODO
 * @Author ZHANZHONGXIN
 * @Date 2022/5/6 11:01
 * @Copyright 博为峰
 */
public class IfElseDemo {
    public static void main(String[] args) {
        /*
          if(条件表达式) {
             语句;
          }else {
             语句;
          }

        */

        //接收用户输入的数据，输出是正数，还是负数
        Scanner scanner = new Scanner(System.in);
        String s = scanner.nextLine();
        int i = Integer.parseInt(s);
        if (i < 0) {
            System.out.println("负数");
        } else {
            System.out.println("正数");
        }
    }
}
